[#BloombergLP-bslalg-HashTableImpUtil-computeBucketIndex]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslalg.adoc[bslalg]::xref:BloombergLP/bslalg/HashTableImpUtil.adoc[HashTableImpUtil]::computeBucketIndex
:relfileprefix: ../../../
:mrdocs:

Return the bucket index for the specified `hashCode`.

== Synopsis

Declared in `<bslalg_hashtableimputil.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
std::size_t
computeBucketIndex(
    std::size_t hashCode,
    std::size_t numBuckets);
----

== Description

Return the index of the bucket referring to the elements whose adjusted hash codes are the same as the adjusted value of the specified `hashCode`, where `hashCode` (and the hash‐codes of the elements) are adjusted for the specified `numBuckets`. The behavior is undefined if `numBuckets` is 0.

== Return Value

index of the bucket for the adjusted `hashCode`

== Parameters

[cols="1,4"]
|===
| Name| Description
| *hashCode*
| non‐adjusted hash code to map onto a bucket
| *numBuckets*
| number of buckets in the table; must not be 0
|===


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